Date: Mon, 29 Mar 2021 09:59:39 GMT From: Vincenzo Maffione <vmaffione@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 21d0c01226eb - main - netmap: iflib: add nm_config callback Message-ID: <202103290959.12T9xdWL009393@gitrepo.freebsd.org>
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The branch main has been updated by vmaffione: URL: https://cgit.FreeBSD.org/src/commit/?id=21d0c01226eb979556d6d792ec58eb54012fbc24 commit 21d0c01226eb979556d6d792ec58eb54012fbc24 Author: you@x <you@x> AuthorDate: 2021-03-29 09:26:12 +0000 Commit: Vincenzo Maffione <vmaffione@FreeBSD.org> CommitDate: 2021-03-29 09:31:18 +0000 netmap: iflib: add nm_config callback This per-driver callback is invoked by netmap when it wants to align the number of TX/RX netmap rings and/or the number of TX/RX netmap slots to the actual state configured in the hardware. The alignment happens when netmap mode is switched on (with no active netmap file descriptors for that netmap port), or when collecting netmap port information. MFC after: 1 week --- sys/net/iflib.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/sys/net/iflib.c b/sys/net/iflib.c index 05e99ba318df..f6cf1233a3b5 100644 --- a/sys/net/iflib.c +++ b/sys/net/iflib.c @@ -829,6 +829,26 @@ iflib_netmap_register(struct netmap_adapter *na, int onoff) return (status); } +static int +iflib_netmap_config(struct netmap_adapter *na, struct nm_config_info *info) +{ + if_t ifp = na->ifp; + if_ctx_t ctx = ifp->if_softc; + iflib_rxq_t rxq = &ctx->ifc_rxqs[0]; + iflib_fl_t fl = &rxq->ifr_fl[0]; + + info->num_tx_rings = ctx->ifc_softc_ctx.isc_ntxqsets; + info->num_rx_rings = ctx->ifc_softc_ctx.isc_nrxqsets; + info->num_tx_descs = iflib_num_tx_descs(ctx); + info->num_rx_descs = iflib_num_rx_descs(ctx); + info->rx_buf_maxsize = fl->ifl_buf_size; + nm_prinf("txr %u rxr %u txd %u rxd %u rbufsz %u", + info->num_tx_rings, info->num_rx_rings, info->num_tx_descs, + info->num_rx_descs, info->rx_buf_maxsize); + + return 0; +} + static int netmap_fl_refill(iflib_rxq_t rxq, struct netmap_kring *kring, bool init) { @@ -1279,6 +1299,7 @@ iflib_netmap_attach(if_ctx_t ctx) na.nm_rxsync = iflib_netmap_rxsync; na.nm_register = iflib_netmap_register; na.nm_intr = iflib_netmap_intr; + na.nm_config = iflib_netmap_config; na.num_tx_rings = ctx->ifc_softc_ctx.isc_ntxqsets; na.num_rx_rings = ctx->ifc_softc_ctx.isc_nrxqsets; return (netmap_attach(&na));
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